Alright, let's work through 51398078 times 43236412 step by step
51398078 × 43236412 = 43236412 × (51398078)
+ 43236412 × 8 yielding 345891296
+ 43236412 × 70 giving us 3026548840
+ 43236412 × 000 that is equal 0
+ 43236412 × 8000 resulting in 345891296000
+ 43236412 × 90000 that equals 3891277080000
+ 43236412 × 300000 what gives us 12970923600000
+ 43236412 × 1000000 resulting in 43236412000000
+ 43236412 × 50000000 which equals 2161820600000000

= 2222268476416136
